Icom IC-V8 Service Manual

R204
3.3k
D37
MA2S077
C52
15p
R205
1.5k
R354
2.2k
R308
47k
R128
10
C105
0.01
C129
1.5
R155
100
C295
0.001
W7
C81
100p
R54
180k
D1
MA77
R2
2.2k
C397
4p
C236
0.01
C214 0.033
C111
0.01
C54
0.001
C55
0.01
C131
0.01
PB0/AN0
1
AVSS
2
TEST
3
X2
4
X1
5
VSS
6
OSC1
7
OSC2
8
RES
9
NMI
10
P20/IRQ4/ADTRG
11
P21/SCK1
12
P22/SI1
13
P23/SO1
14
P24/SCK3
15
P25/RXD
16
P26/TXD
17
P27/IRQ0
18
P17/IRQ3/TMIF
19
P16/IRQ2
20
P15/IRQ1
21
P14
22
P13/TMIG
23
P12/TMOFH
24
P11/TMOFL
25
P10/TMOW
26
VSS
27
V3
28
V2
29
V1
30
VCC
31
PA3/COM4
32
PA2/COM3
33
PA1/COM2
34
PA0/COM1
35
P50/WKP0/SEG1
36
P51/WKP1/SEG2
37
P52/WKP2/SEG3
38
P53/WKP3/SEG4
39
P54/WKP4/SEG5
40
P55/WKP5/SEG6
41
P56/WKP6/SEG7
42
P57/WKP7/SEG8
43 44
P60/SEG9
45
P61/SEG10
46
P62/SEG11
47
P63/SEG12
48
P64/SEG13
49
P65/SEG14
50
P66/SEG15
51
P67/SEG16
52
P70/SEG17
53
P71/SEG18
54
P72/SEG19
55
P73/SEG20
56
P74/SEG21
57
P75/SEG22
58
P76/SEG23
59
P77/SEG24
60
P80/SEG25
61
P81/SEG26
62
P82/SEG27
63
P83/SEG28
64
P84/SEG29
65
P85/SEG30
66
P86/SEG31
67
P87/SEG32
68
P90/SEG33
69
P91/SEG34
70
P92/SEG35
71
P93/SEG36
72
P94/SEG37
73
P95/SEG38
74
P96/SEG39
75
P97/SEG40
76
VCC
77
PD0/SEG41
78
PD1/SEG42
79
PD2/SEG43
80
PD3/SEG44
81
PD4/SEG45
82
PD5/SEG46
83
PD6/SEG47
84
PD7/SEG48
85
PE0/SEG49/M
86
PE1/SEG50/DO
87
PE2/SEG51/CL2
88
PE3/SEG52/CL1
89
AVCC
90
TONEM
91
TONED
92
VTREF
93
AVRE F
94
PB7/AN7
95
PB6/AN6
96
PB5/AN5
97
PB4/AN4
98
PB3/AN3
99
PB2/AN2
100
PB1/AN1
C106
22p
VIN1
1
VOUT1
2
VOUT2
3
VIN2
4
VDD
5
LD
6
CLK
7
DI
8
VIN3
9
VOUT3
10
VOUT4
11
VIN4
12
VIN5
13
VOUT5
14
VOUT6
15
VIN6
16
DO
17
VDAREF
18
RESET
19
GND
20
VIN7
21
VOUT7
22
VOUT8
23
VIN8
24
D2
MA77
C179
0.01
R52
100k
L32
17.5nH
C368
0.5p
R127
33
R358
33k
R41
100
C119
1
R82
1.8k
R341
33k
R12
3.3k
C47
0.47
C124
0.01
C152
0.047
R184
10k
C61
12p
R65
100k
R88
33k
C26
0.001
R122
2.7k
C50
3.3
C284
33p
L19
56nH
R310
47k
123
456
C1
12p
C386
22p
C301
0.001
R87
2.2k
C96
100p
C4 6p
C145
10
C73
0.1
R305
100
R170
10k
C356 0.001
SP1
L16
60nH
C391
22p
R115 120k
R307
390
C23
0.001
C281
0.001
C70
0.001
C300
0.001
L6
27nH
J2
C123
0.001
R311
47k
C48
10
R340
22k
C97
5p
R300 10k
D3
MA77
2
3
1
L14
82nH
R315
8.2k
C27
18p
R121
1k
C132
0.0056
C288
0.001
R174 15k
R69
100
X1
CR-659
21.250 MHz
R75
220
C62
9p
D11
HVU350B
1
2
C75
0.1
W9
R210
3.9k
FI2 SFPC450E
I
O
G
C217
0.1
R13
33
C120
0.1
R85
1.5k
C289
0.001
1
2
3
4
5
6
R302
10k
DS1
TTR5515 UPFDHW
COM4
1
COM3
2
COM2
3
COM1
4
SEG1
5
SEG2
6
SEG3
7
SEG4
8
SEG5
9
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
COM1
COM2
COM3
COM4
R79
1k
R81
470
R222
18k
C365
0.75p
13
12
14
R123
6.8k
C395
18p
C392
10
C243
0.001
R112
1M
C31
5p
EP3
MMZ1608Y102BT
C125
0.0022
C290 0.001
C213 2.2
R313
1k
R114
18k
C303
0.001
R117
1.5k
R177
1k
C212 0.01
X3
CDBCA450CX24
C244
0.01
R169
39k
C139
1
1
2
3
4
5
6
W8
C95
0.001
R349 100k
[USA] only
R49
47k
R70
100k
R53 10k
R5
22
C147
0.047
C60
0.001
C100
39p
R50
470k
R67
100k
C128
0.1
R328
100k
C10
0.001
C398
4.7
R327
100k
C197
0.1
R19
330
L21
47nH
R113 68k
R64
100k
R262
680
C251
0.001
R59
120
R33
220
R301
680
L7
68nH
C28
12p
R304
220
C122
220p
C358
0.001
R329
47k
C367
0.5p
C14
0.01
C293
0.1
V+
4
GND
11
L1
60nH
C304
0.047
C205
0.001
R58 100k
C15
150p
R99
120k
R353
10k
R161
22k
R227
12k
L5
21nH
R20
180k
R259
10k
D50
MA728
R95 1.5M
C394
0.1
D12
HVU350B
R352
270k
C209
0.1
C249
0.01
R1
82k
C171
0.1
C99
0.001
L18
68nH
C372
0.022
R104
100k
R314
4.7k
C72
1
R14
4.7k
C102
56p
C98
5p
C76
18p
C115
0.01
C252
0.001
L15
54nH
R97 220k
C116
82p
R159
100k
R306
330
C113
0.001
C91
2p
R130
100k
C22
100p
R16
15
C277
6p
R11
3.3k
C88
0.001
C64
8p
R32
390
C164
0.001
R61
47
C21
4.7
FI3 FL-298
21.700 MHz
C18
0.001
C363
0.001
C278
22p
R98 330k
C3
27p
C117
0.001
6
5
7
C369
0.033
1
OUT
2
VDD
3
VSS
NC
4
CD
5
R57
100k
R68
4.7k
C230
0.027
C112
0.001
R131
470
C5
22p
C13
0.001
R321
10k
D32
RB706F-40
EP5
R150
470
C69
68p
R303
220
C121
220p
R266
15k
D4
MA77
R336
100k
R84
390
R83
470
C104
0.001
C94
0.5p
C19
0.01
C234
0.001
L24
2.7 H
C216
0.047
R100
18k
C298
4.7
C80
1p
C108
0.01
C126
0.0027
R357
33k
R224
120k
C29
0.001
C107
0.001
R23
680
C219
0.01
R15
100
L8
0.1 H
W11
C30
22p
R18
39k
C287
22p
C93
0.001
DS3
LNJ310M6RA
R93
27k
C168
0.001
R160
150
C32
0.001
R337
1.8M
C151
47p
C149
0.022
R77
100
C370
0.0018
C154
10
C2 2.5p
R324
1.2k
C360
0.001
R137
100
R251
330k
D7
HVC376B
R257
1
C357
0.001
D8
MA77
C233
0.001
C399
0.0033
C90
0.001
R10
33
R163
2.2k
L36
2.2 H
L4
50nH
W12
R107 150k
R105
470
R309 8.2k
D27
RB706F-40
C374
0.0022
C110
5p
R94
1M
C114
0.033
C204
0.001
9
10
8
C167
47p
C396
33p
L20
2.2 H
R108
150k
L2
50nH
EP4
MMZ1608Y102BT
R80
82k
R176
3.9k
FI1 FL-298
21.700 MHz
R185 1k
L29
68nH
NC
1
VCC
2
NC
3
VIN
4
RIPPLE
5
NF
6
PHASE
7
PREGND
8
PWGND
9
POUT
10
R186
47k
C361
0.001
R44
10k
C33
0.001
C79
5p
R48
10k
R126
47k
C150
10
R355
220k
C299
470p
R148
100k
D9
HVU350B
C390
27p
L26
EXCCL3225U
L33
LB-277
D38
HVU350B
OSCIN
1
OSCOUT
2
MIXOUT
3
VCC
4
IFIN
5
DEC
6
FILOUT
7
FILIN
8
AFOUT
9
QUAD
10
IFOUT
11
RSSI
12
N-DET
13
N-REC
14
GND
15
MIXIN
16
C364
27p
R22
68k
R162
22k
C285
18p
XIN
CL
2
DI
3
CE
4
VCCR
5
PI
6
GNDR
7
TEST
8
CP
9
PDP
10
PDN
11
GNDD
12
VCCD
13
PE
14
OUT
15
XOUT
16
C92
100p
C
C388
22p
MP5
R66
100k
C135 270p
C169
0.001
C393
33
C138
0.001
R35
100
C101
56p
R86
47k
R360 2.7k
J3
R326
68k
C174
22
C87
0.01
R139
10k
R21
1k
C24
0.001
R261
47k
C161
0.01
C162
0.01
R141
4.7k
I/O
1
O/I
2
O/I
3
I/O
4
CONT. B
5
CONT. C
6
VEE
7
I/O
8
O/I
9
O/I
10
I/O
11
CONT. D
12
CONT. A
13
VDD
14
C136
0.0056
C375
0.001
R232
1k
R226
1k
R103
12k
X2 CR-663
9.200 MHz
C195
56p
C193
8p
R178
39k
C194
15p
R101
1M
R102
10
R120
47k
C232
0.1
R182
NTCCM20124AG473JCT
R252
10k
R181
100k
R242 1M
R241 1M
C118
0.01
R243 1M
C387
47p
R346 100k
R235 2.2M
R196
82k
R195 56k
L34
2.7 H
R194
56k
DS2
LNJ310M6RA
C373
0.0068
R193
56k
R244
100k
R320
15k
R319
68k
C20
0.001
C199
0.1
R30
4.7k
J6
1
2
C133
0.1
R132
470
R318
68k
D34
MA8056M
R144
22k
C165
0.001
C166
0.001
C163
0.001
MC1
C297
0.001
C296
0.001
R17
1k
R145
470k
R245
100k
R246
100k
R236
1k
R237
1k
R350
1M
C245
0.01
C389 0.001
R225
100k
R228
15k
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
WP
7
VCC
8
C137
0.033
R3
2.2k
R323
10k
R7
220
C134 220p
R264
68k
D33
RB706F-40
R325
68k
C17
0.001
C8
0.001
C153
100
C25
0.001
1
2
3
4
5
6
C82
0.001
D
C144
0.001
R72
10k
R359
1M
123
4
5
6
R361
1M
R351
82
R187
100k
C89
0.001
W13
COM4 COM3 COM2 COM1
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13
LEDC
VCC
UNLK
PSVCO
DUSE
T5C
PLST
OPV1
PSSCO
PCON
RMUT
R5C
MMUTMMUT
AFON
OPT
MIC
OPV3 OPV2 ISO KR0 KR1 KR2 KR3 KS0 KS1 KS2 KS3 KS4
PTT
DIUD
DIUD
TEMP
LVIN
SD
CIRQ
CIRQ
S2
S2
CCS
NOIS
CCS
DICK
XIN
CSHIFT
SCK
SI
SO
SEG2
SEG1
PCON
PS5C
T5C
CTCIN
DET
PS5C
S1
S1
REMO
XOUT
OPT1
OPT1
OPT2
OPT2
OPT3
OPT3 SI
NOIS
NOIS
SCK
SO
T3T3
SO
SCK
T2T2
T1
FC DTC
CTCC
DUSE
MICOUT
MMUT
RMUT
VOLIN
SQLIN
TONE
SICO
CTCSS
CTCSS
RESET
CLIN
CLOUT
CLOUT
TXC
T3
T2
T3
NOIS
SD
SQLIN
SQLIN
LVIN
PSVCO
SO
PLST
DEV
DEV
DTC
FC
PTT
MICIN
OPV1
DET
UNLK
T1
AFON
T5
PS5
PS5
PS5
PS5
PS5 PS5
T3
VCC
CONT
VOLOUT
CLOUT
CLIN
VOLOUT
SW5V
SW5V
PLCK
PLCK
CPU5
CPU5
CPU5
PLCK
R5C
R5
R5
VCC
VCC
DISCIN
SW5V
W5
PTTOUT
PTTIN
MICOUT
MICIN
AFOUT
ANT
VCC
T5
R5
SW5V
VCC T5 R5 SW5V
PS5
VCC T5 R5 SW5V
PSVCO
T5
VCC
VCC
T5
PS5
PS5
PS5
R5
CTCC
CPU5
CTCIN
TONE
COM1
COM2
COM3
COM4
VCC
CP1
PSVCO
PLST
OPV1
ESDA
ESCK
TX: 4.30V
TX: 0V
TX: 0V
AF ON: 6.46V
R164
100k
SICOSICO
OPV2
OPV2
OPV3OPV3
OPT3
OPT3
OPT2
OPT2
OPT1
OPT1
MICIN
MICOUT
MICIN
MICOUT
OPV1
OPV1
PTTOUTPTTOUT
PTTINPTTIN
DC POWER SUPPLY: 7.2 V
MEASURMENT: TESTER (INNER RESISTANCE MORE THAN 50 k‰/V)
R260
10k
DIUD
VCC VCC
1
EXT. SPEAKER
EXT. MIC
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
4
S3
R331
10k
C173
100
C283
0.0022
C305
470p
C282
0.001
I
O
G
12
3
5
D39
MA2 S111
R335
1M
R332
4.7k
R330
10k
C380
22
C377
22
C381
10
C379
0.001
C378
0.1
C376
0.001
C385
0.1
R333
1M
R334
1M
S801
ENCODER
E
UP
DN
C400
0.0022
DICK
DIUD
S123
D48
MA2S111
[USA] only
D46
MA2S111
[USA] only
D45
MA2S111
[USA] only
D40
MA2S111
D41
MA2 S111
D42
MA2 S111
D43
MA2 S111
D44
MA2S111
R239
1k
R238 1k
S112
S108
S105S104
S113
S116
S120
S109
S117 S118
S114
S122S121
S110
S111
S115
S119
KR3
KR2
KR1
KR0
KS0
KS1
KS2
KS3
KS4
ISO
R240
1k
S1
R348
1k
S2
S1
S2
ISO
Q54
2SA1576
Q4
2SC4406
Q5
2SC4406
IC8
HD6433876B49H
IC10
M62363FP-650C
Q1
2SK3476
Q16
XP6501
Q13
3SK274
Q14
2SC4406
Q59
2SC4116
NJM12902V
IC3
Q11 XP4601
NJM12902V
IC3
Q15 2SB1132
Q6
2SC4406
Q53
XP4601
IC3
NJM12902V
Q12
3SK274
Q25
2SC4116
Q2
2SK3475
IC3 NJM12902V
IC11
S-80942ANMP-DD6
Q51
DTC144EU
Q3
2SC5085
IC3
NJM12902V
Q34
2SK1069
IC5 TA7368F
Q31
DTC144TU
Q17
UN911F
IC2 TA31136FN
IC1 LV2105V
IC4 BU4066BCFV
Q22
2SA1576
Q43
DTC144EU
IC7
BR24C16FV-E2
Q38
DTC144EU
Q50
UMX5
Q58
XP4601
Q55
2SB1132
IC12
S-81350HG-KD
Q57
XP1501
Q56
UN9213
Q21
2SA1576
Q37
DTA144EU
CHASSIS UNIT
MAIN UNIT
GND
BATT
SW5V
SW5V
VCC
SD
CLIN
CTCSS
CPU5
CTCC
VCC
VOLIN
CTCIN
VOLOUT
CTCIN
SW5V
J5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
SCK
SO
SCK
SO
CCS
CIRQ
DISCIN
DISCIN
5V 5V
GND
GND
AFOUT
AFOUT
REM
R136
100
C223
0.01
R362
10k
CCS
CIRQ
SISI
F (DET)
TO
OPTIONAL
UNIT
UP DN
123P0
456P1
789P2
0#P3
4.92V
4.35V
TX: 4.21V
RX: 4.99V
TX: 4.97V
RX: 4.27V
TX: 4.67V, RX: 0V
TX: 0V
RX: 4.88V
TX: 4.82V
RX: 0V
TX: 2.79V
RX: 4.97V
1.34V
1.45V
0.76V
4.68V
4.00V
4.75V
2.33V
TX: 0V, RX: 4.53V
TX: 1.99V
RX: 0V
0.71 V
2.46V
0.74V
2.77V
0.96V
1.83V
0.73V
1.21V
2.37V
0.74V
TX: 3.62V
RX: 3.82V
RX: 0V
TX: 1.49V
RX: 0V
TX: 4.06V
RX: 0V
TX: 0.82V
RX: 0V
TX: 1.82V
RX: 0V
TX: 2.20V
RX: 0V
TX: 3.65V
RX: 0V
TX: 0V
RX: 3.26V
TX: 0V
RX: 0.74V
TX: 0V
RX: 4.55V
TX: 0V
RX: 0.74V
TX: 1.97V
RX: 1.61V
TX: 0V, RX: 1.64V
RX: 0.79V
RX: 4.55V
TX: 0V
RX: 1.60V
TX: 0V
RX: 1.76V
TX: 0.833V
TX: 1.97V
RX: 1.61V
AF OFF: 0V
1.90V
LEDC ON: 4.86V
LEDC OFF: 0V
LEDC ON: 3.18V
7.20V
6.60V
4.43V
4.99V
4.97V
4.99V
ON: 4.87V
OFF: 0V
SECTION 12 VOLTAGE DIAGRAM
12 - 1

Icom IC-V8 Specifications

General

Frequency Range	136-174 MHz
Power Output	5.5 W
Mode	FM
Receiver Sensitivity	0.16 μV (12dB SINAD)
Channel Spacing	12.5/25 kHz
Voltage	7.2 V DC